How to OEM unlock MOTO X 2nd Gen

I found an old Moto X 2nd Gen phone running Android 5.

When trying to flash a custom ROM, I found out this phone doesn't have the OEM unlock option in the developer options settings.

In order to unlock bootloader, I followed motorola's guide (warning: this resets the device):

https://en-us.support.motorola.com/app/standalone/bootloader/unlock-your-device-a

I also found this helpful video:

https://www.youtube.com/watch?v=sw675ipX-ds